指定気圧面の観測データ（日ごとの値）
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昭和 2011年12月21時（現地時間 15時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 976.6 | 18 | -1.8 | 66 | 2.6 | 260 |
| 2 | 980.0 | 18 | -5.0 | 59 | 3.3 | 10 |
| 3 | 984.1 | 18 | -5.2 | 66 | 2.9 | 30 |
| 4 | 981.3 | 18 | -4.2 | 67 | 1.0 | 90 |
| 5 | 981.4 | 18 | -1.4 | 58 | 1.5 | 90 |
| 6 | 982.2 | 18 | -2.5 | 84 | 3.9 | 20 |
| 7 | 985.1 | 18 | -3.3 | 68 | 6.2 | 280 |
| 8 | 982.8 | 18 | -2.7 | 72 | 4.2 | 260 |
| 9 | 973.6 | 18 | -5.4 | 70 | 8.0 | 30 |
| 10 | 973.4 | 18 | -2.3 | 88 | 11.5 | 30 |
| 11 | 979.8 | 18 | -0.9 | 87 | 11.8 | 40 |
| 12 | 980.2 | 18 | -3.8 | 80 | 6.9 | 20 |
| 13 | 976.1 | 18 | -4.3 | 80 | 5.6 | 320 |
| 14 | 983.9 | 18 | -7.5 | 81 | 2.6 | 360 |
| 15 | 995.7 | 18 | -4.9 | 63 | 6.8 | 30 |
| 16 | 993.0 | 18 | 0.3 | 95 | 22.0 | 40 |
| 17 | 986.9 | 18 | 3.4 | 70 | 18.2 | 40 |
| 18 | 995.5 | 18 | -0.1 | 93 | 9.4 | 30 |
| 19 | 978.0 | 18 | 2.3 | 66 | 3.9 | 40 |
| 20 | 985.8 | 18 | -0.6 | 87 | 7.0 | 30 |
| 21 | 970.8 | 18 | -0.5 | 75 | 3.5 | 170 |
| 22 | 981.3 | 18 | 0.6 | 81 | 9.4 | 30 |
| 23 | 983.6 | 18 | 2.3 | 76 | 4.6 | 170 |
| 24 | 974.9 | 18 | 1.2 | 54 | 3.5 | 230 |
| 25 | 984.8 | 18 | -2.6 | 86 | 7.4 | 10 |
| 26 | 991.5 | 18 | -1.1 | 71 | 3.6 | 170 |
| 27 | 979.9 | 18 | -0.9 | 64 | 3.7 | 170 |
| 28 | 981.2 | 18 | 0.9 | 53 | 1.3 | 350 |
| 29 | 989.6 | 18 | -1.4 | 79 | 2.8 | 40 |
| 30 | 981.6 | 18 | -2.3 | 77 | 6.6 | 20 |
| 31 | 993.6 | 18 | 0.5 | 67 | 0.9 | 50 |